کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1791081 1524459 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved performance of semi-polar (11-22) GaN-based light-emitting diodes grown on SiNx interlayer
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Improved performance of semi-polar (11-22) GaN-based light-emitting diodes grown on SiNx interlayer
چکیده انگلیسی

We report on the effectiveness of the in-situ SiNx nanomask in reducing defects in semipolar (11-22) GaN films grown on m-plane sapphire. The properties of the semipolar InGaN/GaN double quantum well (DQW) LEDs were improved with a high-quality (11-22) GaN epilayer grown on the SiNx interlayer. High resolution X-ray diffraction analysis revealed that there was a great reduction in the full width at half maximum of both on-axis and off-axis planes on SiNx interlayer. The room temperature cathodoluminescence (CL) band-edge emission intensity of (11-22) GaN grown on the SiNx interlayer was approximately 4 times higher than that of GaN without the SiNx interlayer, which suggests reduction in the nonradiative recombination centers. The optical power of LEDs with the SiNx interlayer was 200% and 270% higher at injection currents of 20 mA and 100 mA, respectively, compared to the reference LEDs.


► The effect of semipolar (11-22) GaN LEDs grown on a SiNx interlayer was investigated.
► The SiNx interlayer has efficiently reduced the defects of semipolar (11-22) GaN.
► The optical power of LEDs with the SiNx interlayer was higher compared to the reference.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 370, 1 May 2013, Pages 114–119
نویسندگان
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